Tim enjoys a cigar occasionally when he and his buddies watch a football game. When he inhales, he is exposed to
A) voluntary smoke.
B) mainstream smoke.
C) sidestream smoke.
D) involuntary smoke.

Question

Quizplus · Accepted Answer

Mainstream smoke is the smoke exhaled by a smoker or inhaled directly from the end of a cigarette, cigar, or pipe. When Tim inhales from his cigar, he is directly inhaling mainstream smoke.

Tim Enjoys a Cigar Occasionally When He and His Buddies